Sentences with phrase «estimated brain size»

The cranium was reconstructed by Meave Leakey into two main pieces that give an estimated brain size of 775cc.

Not exact matches

That estimate came as a surprise: H. naledi's orange - sized brain and curved fingers resemble those of Homo species from around 2 million years ago.

«Depending on the size of the cell, we estimate that between 13 percent and 40 percent of brain cells will be hit once by cosmic rays,» Vazquez explains.

Estimates reveal that their brains were comparable in size to those of some of the world's first known humans, australopithecines, as well as those of today's gorillas, Chris Stringer of the Natural History Museum in London, who did not directly work on the project, told Discovery News.

Full dataset on brain size, body size, diet, social / mating systems, group size and estimates of early Eocene fossil primate brain volumes, complied from published literature sources.

Modern men of that stature would be expected to have a larger than average brain size, but the Turkana Boy's estimated adult brain size of 910 cc is smaller than all but a fraction of 1 % of modern humans of all sizes and both sexes.

Hominin specimen dates and brain size estimates were taken from Shultz et al [3].

The Turkana Boy Homo erectus skeleton belonged to a tall young boy who would probably have grown to around 182 cm (6 feet) in height, but his estimated adult brain size was only 910 cm3, about the size of a 3 or 4 year old modern human child.

Objective: The primary objective of the present study was to estimate how large a sample size would be needed for future clinical trials for AD - modifying treatments in Japan using atrophy measures of the brain as a surrogate biomarker.

First there is significant controversy over body size estimates and second recent work shows that absolute brain size is the best predictor for cognitive ability [32]--[33].

The results are approximate, because they depend on which formula is used, and also on brain and body size, both of which are difficult to estimate for most fossil hominids.

A three year old's brain is estimated to be 90 % the size of the adult brain in terms of structure and function.